The Seiko 1N00-0A40 is a watch model based on the 1N00 movement.
Parts List
| 140N16GN00 | crystal |
| 140N16GN | crystal |
| 30M98NA1 | crown |
| 0H1500B01 | case back gasket - case back gasket |
| 0H1500B0 | case back gasket |
| BEA25G | band - leather band |
| BEJ29G | band - leather band |
| BEJ37G | band |
| BEJ36G | band |
| BEA24G | band |
| 0351807 | others - winding stem |
| 82821520 | others - case ring |
| 1N000A40 | others - case back |
| 1N000A4025 | others - case |
| 1N000C40XG14 | others - dial |
| 1N000C40XS14 | others - dial |
| 1N000C70XB15 | others - dial |
| 1N000C70XG15 | others - dial |
| 1N000C70XS15 | others - dial |
| 1N009 | others - machine code |
| B090BS | others - push pin |
| 2CE042L0BDG | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 05Y10DAM | others - minute hand |
| 05Y10DAH | others - hour hand |
| 04Y12DGM | others - minute hand |
| 1CE030L4BDG | others - hour hand |
| 04Y12DGH | others - hour hand |
Caliber 1N00
